Help - Bubbles in Drain Line

[crussett]

Hello,

I'm setting up my first reef tank and I've run into a bit of a snag. I bought everything used from a fellow Canreefer. I have finally managed to get everything plumbed and hooked up, but I have a problem with the drain line. There seems to be air trapped in the line which is essentially blowing bubbles in the sump. I have a 72 Gallon Oceanic bow with a built in overflow which I have connected some vinyl hose to drain into the sump. I have read tons of forums with lots of suggestions, but at this point I'm just confused. I think the solution is something easy, but i just can't figure it out.

Any help is greatly appreciated.

Thx,

Chad